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--- internet:security:ssl_cert_letsencrypt_zimbra [2022/08/31 09:09]
gcooper
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-====== Using LetsEncrypt SSL Certificates with Zimbra ======
-See also **[[internet:mail:zimbra:zimbra_ssl#self-signed_certificates|Zimbra Self-Signed SSL Certs]]**
-**Howto**: https://wiki.zimbra.com/wiki/Installing_a_LetsEncrypt_SSL_Certificate
-<note warning>
-Your Zimbra will be restarted during this process, taking users offline!
-</note>
-<note tip>Be sure to include all Subject Alternative Hostnames (SANs) that you need on the certificate.</note>
-<note warning>The single-server portion of the howto is fantastic.  However, it only works for the actual hostname and doesn't include any SANs (alternate hostnames) you might need.</note>
-===== Troubleshooting =====
-If you have trouble reissuing a new cert, or **if Zimbra won't start**, recreate and deploy a new self-signed cert to get Zimbra 'working' again.  Then re-implement a LetsEncrypt cert.
-If a cert is expired, you must reissue a new cert.
-If a certificate renewal fails, try reissuing a new cert instead.

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